MQTT 以及 mosquitto
MQTT [1] ( MQ Telemetry Transport or Message Queuing Telemetry Transport ) is an ISO standard (ISO/IEC PRF 20922) [2] publish-subscribe -based "lightweight" messaging protocol for use on top of the TCP/IP protocol . It is designed for connections with remote locations where a "small code footprint" is required or the network bandwidth is limited. mosquitto is an MQTT v3.1 broker. Usage: mosquitto [-c config_file] [-d] [-h] [-p port] -c : specify the broker config file. -d : put the broker into the background after starting. -h : display this help. -p : start the broker listening on the specified port. Not recommended in conjunction with the -c option. -v : verbose mode - enable all logging types. This overrides any logging options given in the config file. See http://mosquitto.org/ for more information.
